Variable preimagesExtrinsicFromJson`Const`

preimagesExtrinsicFromJson: [
    "array",
    | FromJsonWithParser<string, Preimage>
    | FromJsonWithParser<number, Preimage>
    | FromJsonWithParser<unknown, Preimage>
    | ObjectFromJson<Preimage>
    | FromJsonOptional<Preimage>
    | Parser<unknown, Preimage[]>,
] = ...